Bending machine



F. FOREMAN May 7, 1929 BENDING MACHINE Filed Sept, 8, 1925 3 Sheets-Sheet May 7, 19 29.

F. FOREMAN BENDING MACHINE Filed Sept. 8, 1925 3 sheets-sheet 2 May 7, 1929; F, FOREMAN 1,711,524

BENDING MACH INB Filed Sept. 8, 1925 3'Sheets-Sheet 5 J W Q 1 Patented May 7, 1929.

I UNITED STATES FRANK FOREMAN, F TORONTO. ONTARIO; UANADA.

. nnnnme MACHINE.

Application filed September The principal objects of the invention are,

or angle and channel-bars to curved shapes, and to enable the bending of various sizes and cross sectional shapes with the minimum amount of labor and change of parts.

A still further object is to enable the formation of special cross sectional shapes by reforming of standard sections.

The principal feature of the invention consists in the novel construction and -ar rangement of parts," whereby adjustable vertical rolls are driven from a transverse threaded shaft and a third roll is supported upon anadjustable carriage.

A further important feature consists in the novel adaptation of the machine to operate flanging rolls or shaping or reforming bars of various designs.

In the drawings,';Figure 1 is a plan view of the machine. a

Figure 2 is afront ele'vational view..

Figure 3 is a sideelevational view.

Figure 4; is an enlarged mid-sectional viewthroughthe carriage shifting member taken on the line 4+4: of'Figure 1.

Figure 5 is an end ,elevational detailof the hub andgearstructure ofthe carriage shifting member shown in Figured.

Figure16 is an enlarged plan detail showing an attachment arrangement for "reforml ingmetalse ctions.

Figure 7 is a vertical sectional view on the. line 7-7 of Figure 6. H

.Figure 8 is an-elevatio'nal part sectional detail of a rod or tube bending roll.

Figure 9 is a part elevation and part sectional :detail showing a rollerconstruction for handling channel-bars. Figure 10 is a detail similar to-Figure9 showinga structurefor handling angle bars. In the-construction of the machine herein shown, the basel is formed with an upright portion 2 at one end and said uprightjis pro vided with laterally extending flanged sections 3 forming horizontal guideways 4: on which are mountedthe flanged carriages 5. These carriages are each provided with vertical cylindrical bearing members 6 in which are mounted the roller spindles 7. I Eachof the roller spindles is providedat its lower end with a'worm wheel 8 which meshes with a transversely arranged horizontalthreaded spindle 9 supported inthe 20 from the base.

, chine.

s, 1925. Serial No. 55,122.

ase. I A suitable adjusting spindle 11 is jour nalled atv the ends of the guides 4: and is provided with right and left hand threads 00 to operate both carriages to move outwardly or inwardly simultaneously. I

The worm wheels v8 remain constantly in mesh withthe spindle 9' and upon the rotation of the spindle 9 the vertical roller spindles are revolved. The roller spindles are providedqwith flanged and longitudinally keyed ,upper ends 12 on which suitable rollersto. handle the work may be placed. 7 i r The spindle 9 is provided with a bevelled gear 13 at one end and aishaft laarranged in brackets 15 is provided withja bevelled gear 16 tomesh with thebevelled gear 13 and a bevelled: gear 17 at the other end meshing with a bevelled gear 18 onashaft 19, which is join-nalled in a frame extension The shaft 1-9 is driventhrough a suitable arrangement of change gear mechanism, the '80 details of which it is not necessary to here describe as they are of a very common con struction. 1 l v I ,A reverse clutch 211is arranged on the jack I shaft 22 of thechange gear mechanism and is. operated by a lever 23. a r

The change gearflmechanism is operated by a shift bar24 slidably arranged insuitable guides on the frame so that the operator may manipulate the clutch and-f -the change gear from the same side ofthefma-t An extension 25 fr0m the base 1 is formed with a guideway 26 at the top, upon which is mounted a carriage to slide transversely of the plane of movement of the carriages V 5. On this carriage is mounted a vertical roller spindle 28. The carriage 27 is operated to'move on its guidewav 26 by a threaded stationary 1 spindle 29' (Fig. a) secured thereto and'extending into a threaded tubular nut 80, which nut is preferably supported Lat its outward end by 'a-ball thrust bearing 31';

A hand wheel 32 is secured to the outer 05 f end of the tubular member 30 forrotating the nut. "-1 a A bevelled gear .33 is secured'to the tububearings 10 extending upwardly from the v to provide a machine which will greatly re- .b duce the cost of bending bars, tubes and rods 7 7 justing member and said shaft. is operated manipulated from a by a bevelled gear shaft 36 horizontally journalled in brackets on the base of the frame. The latter shaft is in turn operated by a bevelled geared vertical shaft 37 which meshes with'a bevelled gear spindle 38 on which is mounted the hand wheel 89.

The hand wheel 39 is arranged adjacent to the control lever 23 and the handle of the gear shift 24 so that the carriage may be portion adjacent to the other controls.

It will be understood that many different forms of rolls may be devised for use with a machine of this kind, one form of roll be-' ing shown in Figure 8, the perimeter of which is dividedinto a number of varying sized grooves to receive pipes or rods of different diameters.

When rods or pipes are to be bent the rolls are placed on the three vertical spindles and the spindle 11 is manipulated to move the two outer spindles to the desired. position apart, according to the bend that is to be given to the rod. i

The rod is inserted between the two laterally adjustable spindles and the intermediate Vertical spindle 28 is operated through the direct hand wheel or the indirect hand wheel mechanism to tighten against the opposite side of said rod. The clutch is then manipulated to rotate the main driving spindle 9. This rotates the two vertical spindles carried in the carriages 5 and the rollers feed the rod through, imparting a bending stress according to the pressure applied to the centre roll and according to the pressure applied by the driving rolls through the manipulating spindle 11.

It will be understood that by reason of the various adjustments of the spindles any desired radius of arc may be given to a bar or pipe. Special rolls are provided when special sectional forms are to be bent. In Figure 9, for instance, the centre roll 40 is a plain cylinder to fit against the outer side of the web of a. channel-iron section 41, While the driving rolls 42 are shaped to fit between flanges. The rolls {12 may be used with the roll 40 in the bending of angle- 7 bars by having their fiat faces spaced apart by a spacing disc 43.

It will also be understood from this description that a machine constructed as described may be adapted for the bending of almost any form of bar or tube and any desirable bend may be given to it, either short or long or reverse bends.

The machine is also adaptable for use in the reforming'of metal sections, such for instance, as angle bars. If it is desired to reform an anglebar into a'bar of a very sharp V-shaped section or a similar deformation of the flanges of an angle bar, or

a channel, are desired, a supplementary caris placed upon the horizontal spindles 49.

The spindles 19 have mounted thereon the bevelled gears 50 which mesh with bevelled gears 51 carried by the rollers {l6 and '47 and a deforming roller 52 is provided also on the spindle 4-9 to extend between the perimeters of the rollers 45 and 4-7.

Bottom rollers 53 are secured on the spindles on the face of the carriage 44- if desired, to support the bottom edge of the bar being deformed. Y

A bracket 54: extends laterally from one side of the carriage and support-ea guide roller 55 which leads the bars to be deformed into engagement with the deforming rollers.

Straightening rolls 56 and 57 are supported on a rigid bracket 58 arranged at the opposite side of the carriage.

This structure enables the device to be gsed in straightening or reforming metal are.

What I claim as my invention is 1. A bending machine comprising a base, an upright extending above one end of said base, flanges on said upright extending horizontally and forming guidways, a pair of carriages mounted on said guidways, means for moving the carriages in unison toward or away from each other along said guideways, a guideway arranged above the base in transverse relation to said flanged guidway and terminating short. thereof, a carriage mounted on said transverse guideway, roll er spindles journalled in' said carriages, means for driving said roller spindles, and means mounted in said upright for moving said latter carriage on'its guideway.

2. In a bending machine, a frame, a guideway extending'transversely of said frameat one endthereof, a pair of carriages on said guideway, means for moving said carriages in unison in opposite directions along said guideway, a guideway extending longitudinally of the frame and disposed intermediate of the length of said transverseguideway, a carriage mounted on said longitudinal guideway, roller spindles mounted in said carriages adapted-to'receive rolls, a fixed bearing on the frame, a rotatable nut mounted in said fixed bearing, a threaded spindle rigidly fixed to said longitudinally slidable carriageand engaging said nut,:an'd means for rotating said nut.

3. A machine, comprising, a frame, a

threaded horizontal shaft journalled in the frame, carriages ,adjustably carried by the frame, a pair of vertical roller spindles journalled in the carriages, worm wheels on said spindles meshing With said shaft, rolls mounted on the upper ends of said spindles, spindles mounted parallel with the aforesaid spindles, rolls mounted on the latter spindles and in the same horizontal plane-as said former rolls, and means for driving the latter rolls from the former rolls.

. 4. A machine, comprising, a frame, a threaded horizontal shaft journalled in the frame, carriages mountedon the frame and adjustable longitudinally of said shaft, a pair of vertical roller spindles journalled in said carriages, worm wheels on said spindles meshing with said shaft, rolls mounted on the upper ends of said spindles, spindles mounted parallel with the aforesaid spindles, rolls mounted on the latter spindles and in the same horizontal plane as said former rolls, bevel gears arrangedon each of said rolls, spindles mounted horizontally between said roll spindles, and bevel pinions on said latter spindles meshing with said bevel gears.

5. A machine, comprising, a frame, a threaded horizontal shaft journalled in the frame carriages mounted on the frame and adjustable longitudinally of said shaft, a pair of Vertical roller spindles journalled in said carriages, worm Wheels on said spindles meshing with said shaft, rolls mounted on the upper ends of said spindles, spindles mounted parallel with the aforesaid spindles, rolls mounted on the latter spindles and in the same horizontal plane as said former rolls, bevel gears arranged on each of said rolls, spindles mounted horizontally between said roll spindles, bevel pinions on said latter spindles meshing with said bevel gears, and rolls mounted on said horizontal spindles between the aforesaid rolls.

7 FRANK FOREMAN. 

